Window-screen



' (No Model.)

" G. E. BLAINE. WINDOW SCREEN.

Patented Apr. 24,1894.

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UNITED STATES PATENT OFFICE.

GEORGE E. BLAINE, OF ALLIANCE, OHIO.

WINDOW-SCREEN.

SPECIFICATION formingpart of Letters Patent No. 518,660, dated April 24,1894. Application filed December 15, 1893. Serial No. 493,761. (Nomodel.)

To all whom it may concern:

Be it known that I, GEORGE E. BLAINE, a citizen of the United States,residing at Alliance, in the county of Stark and State of Ohio, haveinvented certain new and useful Improvements in Window-Screens, of whichthe following is a full, clear, and exact description, reference beingbad to the accompanying drawings, forming part of this speci fication.

My invention relates to that class of screens which slide vertically inthe window frame, and it hasfor its object the improved construction ofthe same to cause them to bind snugly by friction alone, and retain anypoa front elevation of the lower part of a window frame showing theapplication of my invention. Fig. 2 is an enlarged transverse plan viewon the dotted line a:tr of Fig. 1. Fig. 3 is an enlarged sectional viewof one corner of the screen.

The same letters of reference are nsed to indicate identical parts inall the figures.

A represents a window frame of theusual or any suitable construction,and B the vertically sliding screen therefor. One of the side bars ofthe screen frame has a mortise cut in its outer side and extendingnearly the entire length thereof. In this mortise are placed at each endtwo semi elliptic springs a, Figs. 1 and 3, bent hack on themselves asshown, and then a friction strip 0 of wood, having cut away portions atits ends to form retaining shoulders, is pressed down into the mortisethereby putting the springs a under tension. Nails Z) are then driveninto the ends of the side bar and are bent over to engage the shoulderedportions of the strip 0, as seen in Fig. 3, to hold the same in place inthe mortise. The opposite side bar of the frame has on its outer sidenear each end a round headed screw 0 which is screwed into the wood withonly the head projectin to the inner sides of the window frame and havetheir inner sides grooved to receive on one side the friction strip andon the other side the heads of the screws 0, and on this latter side,openings are out, as seen at d, Figs. 1 and 2, from the outside into thegroove to permit the passage of the screw heads in puttinginortakingoutthescreen. Themannerofputting in and taking out the screenis illustrated in Fig. 2 by the dotted lines. To do this, it is onlynecessary to first insert the strip (3 in its groove and then, bringingthe screw heads opposite the openings d, to press the strip 0 into itsmortise and slip the screw heads through the openings d into the groovein the way D. The screen will then be held by the pr'essure of thesprings forcing out the frictionstrip and it can be adjusted up or downas desired.

The purpose of the screws 0 is not only to hold the screen in place butby screwing them in or out the degree of friction desired can beregulated at will.

, Having thus fully described my invention,I claim- The combination, ina window screen, of a screen frame having one of its sides mortisednearly the entire length, a friction strip fitted in said mortise andprovided with shoulders at each end, springs within said mortisenormally pressing the friction strip outward, retaining clipsoverlapping the ends of said mortise and engaging the shouldered ends ofsaid friction strip to hold the latter in the mortise, and adjustableprojections on the 0pposite side of said screen frame, together withways having vertical grooves which are ongaged by saidfriction strip andadj ustableprojections on the screen frame, one of said ways beingprovided with transverse grooves to permit the ready insertion of thescreen frame to its seat in the ways, substantially as described.

GEORGE E. BLAINE.

Witnesses:

D. FORDING, M. O. FORDING.

